From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH] net: phy: cherry-pick Broadcom drivers updates from v4.10

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---

--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -18,7 +18,7 @@
 #include <linux/module.h>
 #include <linux/phy.h>
 #include <linux/brcmphy.h>
-
+#include <linux/of.h>
 
 #define BRCM_PHY_MODEL(phydev) \
 	((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
@@ -30,9 +30,32 @@ MODULE_DESCRIPTION("Broadcom PHY driver"
 MODULE_AUTHOR("Maciej W. Rozycki");
 MODULE_LICENSE("GPL");
 
-static int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val)
+static int bcm54810_config(struct phy_device *phydev)
 {
-	return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val);
+	int rc, val;
+
+	val = bcm_phy_read_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
+	val &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
+	rc = bcm_phy_write_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL,
+			       val);
+	if (rc < 0)
+		return rc;
+
+	val = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
+	val &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
+	val |= MII_BCM54XX_AUXCTL_MISC_WREN;
+	rc = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
+				  val);
+	if (rc < 0)
+		return rc;
+
+	val = bcm_phy_read_shadow(phydev, BCM54810_SHD_CLK_CTL);
+	val &= ~BCM54810_SHD_CLK_CTL_GTXCLK_EN;
+	rc = bcm_phy_write_shadow(phydev, BCM54810_SHD_CLK_CTL, val);
+	if (rc < 0)
+		return rc;
+
+	return 0;
 }
 
 /* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */
@@ -207,6 +230,12 @@ static int bcm54xx_config_init(struct ph
 	    (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
 		bcm54xx_adjust_rxrefclk(phydev);
 
+	if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54810) {
+		err = bcm54810_config(phydev);
+		if (err)
+			return err;
+	}
+
 	bcm54xx_phydsp_config(phydev);
 
 	return 0;
@@ -304,6 +333,7 @@ static int bcm5482_read_status(struct ph
 
 static int bcm5481_config_aneg(struct phy_device *phydev)
 {
+	struct device_node *np = phydev->dev.of_node;
 	int ret;
 
 	/* Aneg firsly. */
@@ -334,6 +364,49 @@ static int bcm5481_config_aneg(struct ph
 		phy_write(phydev, 0x18, reg);
 	}
 
+	if (of_property_read_bool(np, "enet-phy-lane-swap")) {
+		/* Lane Swap - Undocumented register...magic! */
+		ret = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_SEL_ER + 0x9,
+					0x11B);
+		if (ret < 0)
+			return ret;
+	}
+
+	return ret;
+}
+
+static int bcm54612e_config_aneg(struct phy_device *phydev)
+{
+	int ret;
+
+	/* First, auto-negotiate. */
+	ret = genphy_config_aneg(phydev);
+
+	/* Clear TX internal delay unless requested. */
+	if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
+	    (phydev->interface != PHY_INTERFACE_MODE_RGMII_TXID)) {
+		/* Disable TXD to GTXCLK clock delay (default set) */
+		/* Bit 9 is the only field in shadow register 00011 */
+		bcm_phy_write_shadow(phydev, 0x03, 0);
+	}
+
+	/* Clear RX internal delay unless requested. */
+	if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
+	    (phydev->interface != PHY_INTERFACE_MODE_RGMII_RXID)) {
+		u16 reg;
+
+		/* Errata: reads require filling in the write selector field */
+		bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
+				     MII_BCM54XX_AUXCTL_MISC_RDSEL_MISC);
+		reg = phy_read(phydev, MII_BCM54XX_AUX_CTL);
+		/* Disable RXD to RXC delay (default set) */
+		reg &= ~MII_BCM54XX_AUXCTL_MISC_RXD_RXC_SKEW;
+		/* Clear shadow selector field */
+		reg &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MASK;
+		bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
+				     MII_BCM54XX_AUXCTL_MISC_WREN | reg);
+	}
+
 	return ret;
 }
 
@@ -488,6 +561,19 @@ static struct phy_driver broadcom_driver
 	.config_intr	= bcm_phy_config_intr,
 	.driver		= { .owner = THIS_MODULE },
 }, {
+	.phy_id		= PHY_ID_BCM54612E,
+	.phy_id_mask	= 0xfffffff0,
+	.name		= "Broadcom BCM54612E",
+	.features	= PHY_GBIT_FEATURES |
+			  SUPPORTED_Pause | SUPPORTED_Asym_Pause,
+	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
+	.config_init	= bcm54xx_config_init,
+	.config_aneg	= bcm54612e_config_aneg,
+	.read_status	= genphy_read_status,
+	.ack_interrupt	= bcm_phy_ack_intr,
+	.config_intr	= bcm_phy_config_intr,
+	.driver		= { .owner = THIS_MODULE },
+}, {
 	.phy_id		= PHY_ID_BCM54616S,
 	.phy_id_mask	= 0xfffffff0,
 	.name		= "Broadcom BCM54616S",
@@ -527,6 +613,19 @@ static struct phy_driver broadcom_driver
 	.config_intr	= bcm_phy_config_intr,
 	.driver		= { .owner = THIS_MODULE },
 }, {
+	.phy_id         = PHY_ID_BCM54810,
+	.phy_id_mask    = 0xfffffff0,
+	.name           = "Broadcom BCM54810",
+	.features       = PHY_GBIT_FEATURES |
+			  SUPPORTED_Pause | SUPPORTED_Asym_Pause,
+	.flags          = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
+	.config_init    = bcm54xx_config_init,
+	.config_aneg    = bcm5481_config_aneg,
+	.read_status    = genphy_read_status,
+	.ack_interrupt  = bcm_phy_ack_intr,
+	.config_intr    = bcm_phy_config_intr,
+	.driver		= { .owner = THIS_MODULE },
+}, {
 	.phy_id		= PHY_ID_BCM5482,
 	.phy_id_mask	= 0xfffffff0,
 	.name		= "Broadcom BCM5482",
@@ -612,9 +711,11 @@ static struct mdio_device_id __maybe_unu
 	{ PHY_ID_BCM5411, 0xfffffff0 },
 	{ PHY_ID_BCM5421, 0xfffffff0 },
 	{ PHY_ID_BCM5461, 0xfffffff0 },
+	{ PHY_ID_BCM54612E, 0xfffffff0 },
 	{ PHY_ID_BCM54616S, 0xfffffff0 },
 	{ PHY_ID_BCM5464, 0xfffffff0 },
 	{ PHY_ID_BCM5481, 0xfffffff0 },
+	{ PHY_ID_BCM54810, 0xfffffff0 },
 	{ PHY_ID_BCM5482, 0xfffffff0 },
 	{ PHY_ID_BCM50610, 0xfffffff0 },
 	{ PHY_ID_BCM50610M, 0xfffffff0 },
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -13,11 +13,13 @@
 #define PHY_ID_BCM5241			0x0143bc30
 #define PHY_ID_BCMAC131			0x0143bc70
 #define PHY_ID_BCM5481			0x0143bca0
+#define PHY_ID_BCM54810			0x03625d00
 #define PHY_ID_BCM5482			0x0143bcb0
 #define PHY_ID_BCM5411			0x00206070
 #define PHY_ID_BCM5421			0x002060e0
 #define PHY_ID_BCM5464			0x002060b0
 #define PHY_ID_BCM5461			0x002060c0
+#define PHY_ID_BCM54612E		0x03625e60
 #define PHY_ID_BCM54616S		0x03625d10
 #define PHY_ID_BCM57780			0x03625d90
 
@@ -52,6 +54,7 @@
 #define PHY_BRCM_EXT_IBND_TX_ENABLE	0x00002000
 #define PHY_BRCM_CLEAR_RGMII_MODE	0x00004000
 #define PHY_BRCM_DIS_TXCRXC_NOENRGY	0x00008000
+
 /* Broadcom BCM7xxx specific workarounds */
 #define PHY_BRCM_7XXX_REV(x)		(((x) >> 8) & 0xff)
 #define PHY_BRCM_7XXX_PATCH(x)		((x) & 0xff)
@@ -102,11 +105,14 @@
 #define MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA	0x0800
 
 #define MII_BCM54XX_AUXCTL_MISC_WREN	0x8000
+#define MII_BCM54XX_AUXCTL_MISC_RXD_RXC_SKEW	0x0100
 #define MII_BCM54XX_AUXCTL_MISC_FORCE_AMDIX	0x0200
 #define MII_BCM54XX_AUXCTL_MISC_RDSEL_MISC	0x7000
 #define MII_BCM54XX_AUXCTL_SHDWSEL_MISC	0x0007
+#define MII_BCM54XX_AUXCTL_SHDWSEL_READ_SHIFT	12
+#define MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN	(1 << 8)
 
-#define MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL	0x0000
+#define MII_BCM54XX_AUXCTL_SHDWSEL_MASK	0x0007
 
 /*
  * Broadcom LED source encodings.  These are used in BCM5461, BCM5481,
@@ -186,6 +192,12 @@
 #define BCM5482_SSD_SGMII_SLAVE_EN	0x0002	/* Slave mode enable */
 #define BCM5482_SSD_SGMII_SLAVE_AD	0x0001	/* Slave auto-detection */
 
+/* BCM54810 Registers */
+#define BCM54810_EXP_BROADREACH_LRE_MISC_CTL	(MII_BCM54XX_EXP_SEL_ER + 0x90)
+#define BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN	(1 << 0)
+#define BCM54810_SHD_CLK_CTL			0x3
+#define BCM54810_SHD_CLK_CTL_GTXCLK_EN		(1 << 9)
+
 
 /*****************************************************************************/
 /* Fast Ethernet Transceiver definitions. */
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -77,7 +77,7 @@ config BROADCOM_PHY
 	select BCM_NET_PHYLIB
 	---help---
 	  Currently supports the BCM5411, BCM5421, BCM5461, BCM54616S, BCM5464,
-	  BCM5481 and BCM5482 PHYs.
+	  BCM5481, BCM54810 and BCM5482 PHYs.
 
 config BCM_CYGNUS_PHY
 	tristate "Drivers for Broadcom Cygnus SoC internal PHY"
--- a/drivers/net/phy/bcm-phy-lib.c
+++ b/drivers/net/phy/bcm-phy-lib.c
@@ -50,6 +50,23 @@ int bcm_phy_read_exp(struct phy_device *
 }
 EXPORT_SYMBOL_GPL(bcm_phy_read_exp);
 
+int bcm54xx_auxctl_read(struct phy_device *phydev, u16 regnum)
+{
+	/* The register must be written to both the Shadow Register Select and
+	 * the Shadow Read Register Selector
+	 */
+	phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum |
+		  regnum << MII_BCM54XX_AUXCTL_SHDWSEL_READ_SHIFT);
+	return phy_read(phydev, MII_BCM54XX_AUX_CTL);
+}
+EXPORT_SYMBOL_GPL(bcm54xx_auxctl_read);
+
+int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val)
+{
+	return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val);
+}
+EXPORT_SYMBOL(bcm54xx_auxctl_write);
+
 int bcm_phy_write_misc(struct phy_device *phydev,
 		       u16 reg, u16 chl, u16 val)
 {
--- a/drivers/net/phy/bcm-phy-lib.h
+++ b/drivers/net/phy/bcm-phy-lib.h
@@ -26,6 +26,9 @@ static inline int bcm_phy_write_exp_sel(
 	return bcm_phy_write_exp(phydev, reg | MII_BCM54XX_EXP_SEL_ER, val);
 }
 
+int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val);
+int bcm54xx_auxctl_read(struct phy_device *phydev, u16 regnum);
+
 int bcm_phy_write_misc(struct phy_device *phydev,
 		       u16 reg, u16 chl, u16 value);
 int bcm_phy_read_misc(struct phy_device *phydev,
